Radiating fin of magnetron

Abstract

The invention relates to a radiating fin of a magnetron; the radiating fin is integrally formed by stamping a metal plate; an anode hole for assembling an anode shell of the magnetron is left on a main board forming the middle part of the radiating fin; the left side and the right side of the radiating fin are respectively sheared, bended and processed into a plurality of radiating blades so as to enlarge a contact area between the radiating fin and flowing air; the radiating blades at the left side and the right side are symmetrically distributed; flow guiding bugles are formed at the periphery of the anode hole on the main board; fixed bending is formed at the tail end of the outer side of each radiating blade; and the radiating fin is characterized in that the thickness of the main board in the middle part of the radiating fin is different from the thickness of the radiating blades arranged at both sides of the radiating fin; and the thickness of the main board is larger than that of the radiating blades. The radiating fin improves the heat conduction efficiency of the main board, more rapidly transmits more heat from the anode of the magnetron to the radiating fin and increases the convective heat exchange capacity of air current, so that the heat accumulated on the radiating fin is more rapidly diffused, thereby reducing the temperature of the anode of the magnetron and leads the working performance of the magnetron to be improved.

Description

technical field [0001] The invention belongs to the technical field of magnetrons, and in particular relates to a heat sink of a magnetron that increases the thickness of a main board while simultaneously reducing the thickness of heat dissipation blades on both sides of the main board, thereby effectively increasing heat exchange capacity and reducing the temperature of the anode of the magnetron. Background technique [0002] figure 1 It is a longitudinal sectional view of a magnetron structure in the prior art; figure 2 It is a structural schematic diagram of a magnetron heat sink in the prior art; image 3 is a side view of a heat sink of a prior art magnetron. [0003] Such as figure 1 , figure 2 As shown, the magnetron mainly includes: a positive electrode part; a negative electrode part; a magnetic pole part; and a microwave emitting part. The positive electrode part is composed of a barrel-shaped anode casing 11, and a plurality of radial blades 12 are formed ...

AI Technical Summary

Problems solved by technology

When the magnetron is in use, a large amount of heat generated by the anode exchanges heat with the flowing air through the heat sink group. The key to the heat dissipation on the anode lies in the thickness of the main board of the heat sink in contact with the anode. The greater the thickness of the main board, the greater the heat dissipation capacity. The stronger it is, but the thickness of each part of the heat sink in the prior art is the same, increasing the thickness of the main board also increases the thickness of the heat dissipation blades, thereby increasing the overall cost of the heat sink, and because the thickness of the heat dissipation blades increases. Correspondingly, the air circulation space between the heat sinks is reduced, and the resistance to air flow is increased, so that the overall heat dissipation capacity of the heat sink cannot meet the design expectations.

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